Fig. 4From: Oxygen-15 labeled CO2, O2, and CO PET in small animals: evaluation using a 3D-mode microPET scanner and impact of reconstruction algorithmsSagittal PET images reconstructed using FBP, OSEM2D, and OSEM3D-MAP during the steady state in an 15O-CO2 study and a CT image. The PET image obtained using OSEM3D-MAP showed a higher accumulation in the brain than those images obtained using FBP and OSEM2D based on a visual assessmentBack to article page